Quick-connect coupling



FIG. 1 is a front elevational view of a quick connect coupling showing my new design, the rear elevation being a mirror image of the front shown;

FIG. 2 is a side elevational view thereof, the opposite side being the same as the side shown;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof. 

The ornamental design for quick-connect coupling, as shown and described. 